package com.ly.cloud.utils;

import java.util.Calendar;
import java.util.Date;

/**
 *  @author zhoulianwu
 *  @function : 该类主要用于学年学期中的日历功能开发：主要是阴历和农历的转化
 */
public class CCalendar {
    public CCalendar() {
        super();
    }
    
    private static int monCyl, dayCyl, yearCyl;  
            private static int year, month, day; 
            private static boolean isLeap;  
            
            private static int[] lunarInfo = {0x04bd8, 0x04ae0, 0x0a570, 0x054d5, 
                    0x0d260, 0x0d950, 0x16554, 0x056a0, 0x09ad0, 0x055d2, 0x04ae0, 
                    0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0, 0x0ada2, 
                    0x095b0, 0x14977, 0x04970, 0x0a4b0, 0x0b4b5, 0x06a50, 0x06d40, 
                    0x1ab54, 0x02b60, 0x09570, 0x052f2, 0x04970, 0x06566, 0x0d4a0, 
                    0x0ea50, 0x06e95, 0x05ad0, 0x02b60, 0x186e3, 0x092e0, 0x1c8d7, 
                    0x0c950, 0x0d4a0, 0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4, 0x025d0, 
                    0x092d0, 0x0d2b2, 0x0a950, 0x0b557, 0x06ca0, 0x0b550, 0x15355, 
                    0x04da0, 0x0a5d0, 0x14573, 0x052d0, 0x0a9a8, 0x0e950, 0x06aa0, 
                    0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263, 
                    0x0d950, 0x05b57, 0x056a0, 0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0, 
                    0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b5a0, 0x195a6, 0x095b0,  
                    0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40, 0x0af46, 
                    0x0ab60, 0x09570, 0x04af5, 0x04970, 0x064b0, 0x074a3, 0x0ea50, 
                    0x06b58, 0x055c0, 0x0ab60, 0x096d5, 0x092e0, 0x0c960, 0x0d954, 
                    0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0, 0x092d0, 
                    0x0cab5, 0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0, 
                    0x0a5b0, 0x15176, 0x052b0, 0x0a930, 0x07954, 0x06aa0, 0x0ad50, 
                    0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65, 0x0d530, 
                    0x05aa0, 0x076a3, 0x096d0, 0x04bd7, 0x04ad0, 0x0a4d0, 0x1d0b6, 
                    0x0d250, 0x0d520, 0x0dd45, 0x0b5a0, 0x056d0, 0x055b2, 0x049b0, 
                    0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0}; 
            private static int[] solarMonth = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
            private static String[] Gan = {"甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸"};  
            private static String[] Zhi = {"子", "丑", "寅", "卯", "辰", "巳", "午", "未",
            "申", "酉", "戌", "亥"};
        private static String[] Animals = {"鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊",
            "猴", "鸡", "狗", "猪"};
        private static int[] sTermInfo = {0, 21208, 42467, 63836, 85337, 107014,
            128867, 150921, 173149, 195551, 218072, 240693, 263343, 285989,
            308563, 331033, 353350, 375494, 397447, 419210, 440795, 462224,
            483532, 504758};
        private static String[] nStr1 = {"日", "一", "二", "三", "四", "五", "六", "七",
            "八", "九", "十"};
        private static String[] nStr2 = {"初", "十", "廿", "卅", "　"};
        private static String[] monthNong = {"正", "正", "二", "三", "四", "五", "六",
            "七", "八", "九", "十", "十一", "十二"};
        private static String[] yearName = {"零", "壹", "贰", "叁", "肆", "伍", "陆",
            "柒", "捌", "玖"};
        private Object LogFactory;
        //====================================== 传回农历 y年的总天数  
        private static int lYearDays(int y) {
            int i;
            int sum = 348; //29*12
            for (i = 0x8000; i > 0x8; i >>= 1) {
                sum += (lunarInfo[y - 1900] & i) == 0 ? 0 : 1; //大月+1天  
            }
            return (sum + leapDays(y)); //+闰月的天数  
        }
        //====================================== 传回农历 y年闰月的天数  
        private static int leapDays(int y) {
            if (leapMonth(y) != 0) {
                return ((lunarInfo[y - 1900] & 0x10000) == 0 ? 29 : 30);
            } else {
                return (0);
            }
        }
        //====================================== 传回农历 y年闰哪个月 1-12 , 没闰传回 0  
        private static int leapMonth(int y) {
            return (lunarInfo[y - 1900] & 0xf);
        }
        //====================================== 传回农历 y年m月的总天数  
        private static int monthDays(int y, int m) {
            return ((lunarInfo[y - 1900] & (0x10000 >> m)) == 0 ? 29 : 30);
        }
        //====================================== 算出农历, 传入日期物件, 传回农历日期物件  
        //                                      该物件属性有 .year .month .day .isLeap .yearCyl .dayCyl .monCyl  
        private static void Lunar1(Date objDate) {
            int i, leap = 0, temp = 0;
            Calendar cl = Calendar.getInstance();
            cl.set(1900, 0, 31); //1900-01-31是农历1900年正月初一  
            Date baseDate = cl.getTime();
            //1900-01-31是农历1900年正月初一  
            int offset = (int) ((objDate.getTime() - baseDate.getTime()) / 86400000); //天数(86400000=24*60*60*1000)  
            dayCyl = offset + 40; //1899-12-21是农历1899年腊月甲子日  
            monCyl = 14; //1898-10-01是农历甲子月  

            //得到年数  

            for (i = 1900; i < 2050 && offset > 0; i++) {
                temp = lYearDays(i); //农历每年天数  
                offset -= temp;
                monCyl += 12;
            }
            if (offset < 0) {
                offset += temp;
                i--;
                monCyl -= 12;
            }
            year = i; //农历年份  
            yearCyl = i - 1864; //1864年是甲子年  
            leap = leapMonth(i); //闰哪个月  
            isLeap = false;
            for (i = 1; i < 13 && offset > 0; i++) {
                //闰月  
                if (leap > 0 && i == (leap + 1) && isLeap == false) {
                    --i;
                    isLeap = true;
                    temp = leapDays(year);
                } else {
                    temp = monthDays(year, i);
                }
                //解除闰月  
                if (isLeap == true && i == (leap + 1)) {
                    isLeap = false;
                }
                offset -= temp;
                if (isLeap == false) {
                    monCyl++;
                }
            }
            if (offset == 0 && leap > 0 && i == leap + 1) {
                if (isLeap) {
                    isLeap = false;
                } else {
                    isLeap = true;
                    --i;
                    --monCyl;
                }
            }
            if (offset < 0) {
                offset += temp;
                --i;
                --monCyl;
            }
            month = i; //农历月份  
            day = offset + 1; //农历天份  
        }
        private static int getYear() {
            return (year);
        }
        private static int getMonth() {
            return (month);
        }
        private static int getDay() {
            return (day);
        }
        private static int getMonCyl() {
            return (monCyl);
        }
        private static int getYearCyl() {
            return (yearCyl);
        }
        private static int getDayCyl() {
            return (dayCyl);
        }
        private static boolean getIsLeap() {
            return (isLeap);
        }
        //============================== 传入 offset 传回干支, 0=甲子  
        private static String cyclical(int num) {
            return (Gan[num % 10] + Zhi[num % 12]);
        }
        //====================== 中文日期  
        private static String cDay(int d) {
            String s;
            switch (d) {
                case 10:
                    s = "初十";
                    break;
                case 20:
                    s = "二十";
                    break;
                case 30:
                    s = "三十";
                    break;
                default:
                    s = nStr2[(int) (d / 10)];//取商  
                    s += nStr1[d % 10];//取余  
            }
            return (s);
        }
        private static String cYear(int y) {
            String s = " ";
            int d;
            while (y > 0) {
                d = y % 10;
                y = (y - d) / 10;
                s = yearName[d] + s;
            }
            return (s);
        }
        public static String getLunar(String year, String month, String day) {
            Date sDObj;
            String s;
            int SY, SM, SD;
            int sy;
            SY = Integer.parseInt(year);
            SM = Integer.parseInt(month);
            SD = Integer.parseInt(day);
            sy = (SY - 4) % 12;
            Calendar cl = Calendar.getInstance();
            cl.set(SY, SM - 1, SD);
            sDObj = cl.getTime();
            //日期  
            Lunar1(sDObj); //农历  
            int Nmonth = getMonth();
            int Nday = getDay();
            s=getYear()+"-"+(Nmonth > 9 ? Nmonth+ "" : "0" + Nmonth )+"-"+(Nday > 9 ? Nday+ "" : "0" + Nday);
    //        s = "农历 " + "【" + Animals[sy] + "】" + cYear(getYear()) + "年" + " ";
    //        s += (getIsLeap() ? "闰" : "") + monthNong[getMonth()] + "月"+ (monthDays(getYear(), getMonth()) == 29 ? "小" : "大");
    //        s += cDay(getDay()) + " ";
    //        s += cyclical(getYearCyl()) + "年" + cyclical(getMonCyl()) + "月"+ cyclical(getDayCyl()) + "日";
            return s;
        }
        public static void main(String[] args) {
            System.out.println(getLunar("1990", "8", "26"));
            System.out.println(getLunar("2008", "6", "8"));
            System.out.println(getLunar("2009", "4", "3"));
            System.out.println(getLunar("2011", "11", "22"));
            System.out.println(getLunar("2014", "10", "28"));
            System.out.println(getLunar("2014", "5", "27"));
            
        }

}

